Commit c90b670b authored Oct 27, 2018 by Martin Willi Committed by Johannes Berg Nov 09, 2018

nl80211: announce radios/interfaces when switching namespaces



When a wiphy changes its namespace, all interfaces are moved to the
new namespace as well. The network interfaces are properly announced
as leaving on the old and as appearing on the new namespace through
RTM_NEWLINK/RTM_DELLINK. On nl80211, however, these events are missing
for radios and their interfaces.

Add netlink announcements through nl80211 when switching namespaces,
so userspace can rely on these events to discover radios properly.

Signed-off-by: Martin Willi <martin@strongswan.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

parent cee7013b

net/wireless/core.c

+14 −0

Original line number	Diff line number	Diff line
		@@ -191,11 +191,25 @@ int cfg80211_switch_netns(struct cfg80211_registered_device *rdev,
		return err;
		}

		list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
		if (!wdev->netdev)
		continue;
		nl80211_notify_iface(rdev, wdev, NL80211_CMD_DEL_INTERFACE);
		}
		nl80211_notify_wiphy(rdev, NL80211_CMD_DEL_WIPHY);

		wiphy_net_set(&rdev->wiphy, net);

		err = device_rename(&rdev->wiphy.dev, dev_name(&rdev->wiphy.dev));
		WARN_ON(err);

		nl80211_notify_wiphy(rdev, NL80211_CMD_NEW_WIPHY);
		list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
		if (!wdev->netdev)
		continue;
		nl80211_notify_iface(rdev, wdev, NL80211_CMD_NEW_INTERFACE);
		}

		return 0;
		}

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